Nikola Tesla

Nikola Tesla (1856-1943), born in Smiljan, dreamed of harnessing unseen forces. From childhood he pictured entire machines in his mind before ever touching tools.00:00:00 Introduction00:01:57 I. My Early LifeTesla was born at night during a loud storm in the small town of Smiljan. His mother said the thunder meant he would shine like lightning one day. Little Nikola loved math, poems, and puzzles. He built toy waterwheels in the stream near his home. He could solve big sums in his head faster than his teachers. Once, he caught malaria and almost died. During fever he saw bright images floating around him. Later he learned to control those images and use them as tools. His mother, who made smart tools for weaving, was his first guide. His priest father wanted him to join the church, but Nikola dreamed of being an engineer.00:29:41 II. My First Efforts at InventionWhen Tesla was still a teen, he tried to copy a flying machine he saw in a book. He jumped off the barn roof holding an umbrella and broke some bones. He kept trying new things. He made a motor that chased cats around the yard. At school in Karlstadt he built a tiny water turbine as a class show. He became sick again from hard work and reading too long at night. After he got better, he took a job fixing telegraph lines. He learned every piece inside the system by heart. While chasing a fault in a dark tunnel, he thought of making a machine that ran without sparks, using smooth whirlpools of power. This was the seed of the motor that would change the world.00:55:04 III. My Later Endeavors – The Discovery of the Rotating Magnetic FieldTesla moved to Budapest to work for the new telephone exchange. One spring day he walked with a friend in the city park while the sun set. He recited lines from Goethe’s “Faust.” At that moment, an idea burst in his mind: a spinning field of force that could turn a wheel without brushes or sparks. He grabbed a stick and drew circles in the sand, showing coils set at angles. The friend watched the sand diagrams come alive in air as Tesla waved his arms. Back at the shop, Tesla built a simple model. The wheel turned as if by magic. This rotating magnetic field became the heart of the polyphase motor, bringing cheap electric power to factories and homes.01:17:42 IV. The Discovery of the Tesla Coil and TransformerTesla sailed to America with four cents and a poem in his pocket. He started work for Thomas Edison but soon left because Edison liked direct current, while Tesla trusted alternating current. In a tiny lab on Liberty Street, Tesla and his helpers wound coils day and night. He learned how to make currents vibrate at very high speeds. By tuning two coils, he could send sparks long distances through the air. The Tesla coil could light lamps without wires, send loud music through the Earth, and make sheets of blue fire dance above a metal plate. Crowds gasped when they saw him pass two-million-volt sparks over his body without harm.01:36:31 V. The Magnifying TransmitterTesla wanted to send power across the ocean. He moved to Colorado Springs, where the sky was wide and clear. He built a tall wooden tower with a copper ball on top and a thick spiral coil inside. This was the Magnifying Transmitter. Late at night he opened the switch. Purple snakes of lightning leaped from the ball and struck the ground half a block away. The thunder shook windows across town. He tuned the machine until the Earth itself seemed to ring like a giant bell. He lit two hundred lamps a mile from the lab, using only the Earth to carry the force. He was sure he could one day beam electricity to any place on the globe.01:58:40 VI. The Art of Telautomatics